{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfdafc409bf266cd0134a78598b6ebd24099b717faf7e2f9b00d932b59f9ed253",
    "signature": "0xd4764c0d87881d8858a54b16e7fd684f48bc2b378fa6fd72ef97f5baa28bb0f936038354f9f9574428fdd24c20bf41af08275d38c2e39891f0cec1b5b126ed741c",
    "signer": "0x6105321746dCE4037c7De29E330bCfF3C251A5b1",
    "userId": "775862115"
  }
}